S931USQUCDZIF – Galaxy S25 firmware

Build S931USQUCDZIF is a feature update for the Galaxy S25 (SM-S931U) on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 4, 2026 (method) and has reached 10 regions so far. It keeps bootloader bit 12, so downgrading to the previous build S931USQSCCZF9 is still possible. Samsung still serves this file.

Model
SM-S931U
Android
Android 17
Type
Feature
Bootloader bit
12
First released
Oct 4, 2026
Regions
10

Rollout timeline by region

The date each region code (CSC) first received S931USQUCDZIF, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
AIOUSA (Cricket)Oct 4, 2026day 0S931USQUCDZIF/S931UOYNCDZIF/S931USQUCDZIF
ATTUSA (AT&T)Oct 4, 2026day 0S931USQUCDZIF/S931UOYNCDZIF/S931USQUCDZIF
TMBUSA (T-Mobile)Oct 4, 2026day 0S931USQUCDZIF/S931UOYNCDZIF/S931USQUCDZIF
TMKUSA (MetroPCS)Oct 4, 2026day 0S931USQUCDZIF/S931UOYNCDZIF/S931USQUCDZIF
USCUSA (US Cellular)Oct 4, 2026day 0S931USQUCDZIF/S931UOYNCDZIF/S931USQUCDZIF
VZWUSA (Verizon)Oct 6, 2026+2 daysS931USQUCDZIF/S931UOYNCDZIF/S931USQUCDZIF
DSAUSAOct 7, 2026+3 daysS931USQUCDZIF/S931UOYNCDZIF/S931USQUCDZIF
DSHUSAOct 7, 2026+3 daysS931USQUCDZIF/S931UOYNCDZIF/S931USQUCDZIF
CCTUSA (Comcast)Oct 7, 2026+3 daysS931USQUCDZIF/S931UOYNCDZIF/S931USQUCDZIF
XAAUSA (unlocked)Oct 7, 2026+3 daysS931USQUCDZIF/S931UOYNCDZIF/S931USQUCDZIF

Download and release notes

samloader download -m SM-S931U -r XAA -v S931USQUCDZIF/S931UOYNCDZIF/S931USQUCDZIF

Samsung's release notes and security patch level for this update: SM-S931U / XAA on doc.samsungmobile.com. What each part of the build number means: decode S931USQUCDZIF.